// import { createCellPos } from './translateNumToLetter'
import ExcelJS from 'exceljs'
import {saveAs} from 'file-saver';

/**
 * 下载Excel
 * @param luckysheet    -> luckysheet的所有sheet
 * @param name          -> 保存文件名（如：a.xlsx）
 * @param excelType     -> office/wps
 * @param ignorecolumns -> 需要忽略的列
 */
const exportExcelFront = function (luckysheet, name, excelType, ignorecolumns) {
  // 1.创建工作簿，可以为工作簿添加属性
  const workbook = new ExcelJS.Workbook()
  // 2.创建表格，第二个参数可以配置创建什么样的工作表
  luckysheet.forEach(function (table) {
    // debugger
    if (table.data.length === 0) return true
    const worksheet = workbook.addWorksheet(table.name)
    const merge = (table.config && table.config.merge) || {}        //合并单元格
    const borderInfo = (table.config && table.config.borderInfo) || {}      //边框
    const columnWidth = (table.config && table.config.columnlen) || {}    //列宽
    const rowHeight = (table.config && table.config.rowlen) || {}      //行高
    const frozen = table.frozen || {}       //冻结
    const rowhidden = (table.config && table.config.rowhidden) || {}    //行隐藏
    let colhidden = (table.config && table.config.colhidden) || {}    //列隐藏
    const filterSelect = table.filter_select || {}    //筛选
    const images = table.images || {}   //图片
    const hide = table.hide;    //工作表 sheet 1隐藏
    if (hide === 1) {
      // 隐藏工作表
      worksheet.state = 'hidden';
    }
    if (ignorecolumns === undefined || ignorecolumns === null) {
      ignorecolumns = {
        columns: [],
        startRowNumber: 0
      }
    }
    let newdata = preprocessing(table.data, ignorecolumns, colhidden,merge);
    table.data = newdata.data;
    colhidden = newdata.colhidden;
    setStyleAndValue(table.data, worksheet)
    setMerge(merge, worksheet)
    setBorder(borderInfo, worksheet)
    setImages(images, worksheet, workbook)
    setColumnWidth(columnWidth, worksheet)
    //行高设置50导出后在ms-excel中打开显示25，在wps-excel中打开显示50这个bug不会修复
    setRowHeight(rowHeight, worksheet, excelType)
    setFrozen(frozen, worksheet)
    setRowHidden(rowhidden, worksheet)
    setColHidden(colhidden, worksheet)
    setFilter(filterSelect, worksheet)
    return true
  })
  // 4.写入 buffer
  const buffer = workbook.xlsx.writeBuffer().then(data => {
    const blob = new Blob([data], {
      type: 'application/vnd.ms-excel;charset=utf-8'
    })
    // 浏览器下载文件的示例代码
    console.log("导出成功！")
    saveAs(blob, `${name}`)
  })
  return buffer
}

function preprocessing(cellArr, ignorecolumns, colhidden,merge) {
  // console.log("preprocessing:",merge)
  let newData = [];
  let newColHidden = colhidden;
  if (ignorecolumns.columns.length > 0) {
    newColHidden = {};
  }
  for (let i = 0; i < cellArr.length; i++) {
    let row = cellArr[i];
    let rows = [];
    if (i >= ignorecolumns.startRowNumber) {
      for (let j = 0; j < row.length; j++) {
        let cell = row[j];
        if (ignorecolumns.columns.indexOf(j) === -1) {
          rows.push(cell);
        }
      }
    } else {
      for (let j = 0; j < row.length; j++) {
        let cell = row[j];
        rows.push(cell);
      }
    }

    newData.push(rows);
  }
  return {
    data: newData,
    colhidden: newColHidden
  };
}

/**
 * 列宽
 * @param columnWidth
 * @param worksheet
 */
var setColumnWidth = function (columnWidth, worksheet) {
  for (let key in columnWidth) {
    worksheet.getColumn(parseInt(key) + 1).width = columnWidth[key] / 7.5
  }
}

/**
 * 行高
 * @param rowHeight
 * @param worksheet
 * @param excelType
 */
var setRowHeight = function (rowHeight, worksheet, excelType) {
  //导出的文件用wps打开和用excel打开显示的行高大一倍
  if (excelType == "wps") {
    for (let key in rowHeight) {
      worksheet.getRow(parseInt(key) + 1).height = rowHeight[key] * 0.75
    }
  }
  if (excelType == "office" || excelType == undefined) {
    for (let key in rowHeight) {
      worksheet.getRow(parseInt(key) + 1).height = rowHeight[key] * 1.5
    }
  }
}

/**
 * 合并单元格
 * @param luckyMerge
 * @param worksheet
 */
var setMerge = function (luckyMerge = {}, worksheet) {
  const mergearr = Object.values(luckyMerge)
  mergearr.forEach(function (elem) {
    // elem格式：{r: 0, c: 0, rs: 1, cs: 2}
    // 按开始行，开始列，结束行，结束列合并（相当于 K10:M12）
    worksheet.mergeCells(
      elem.r + 1,
      elem.c + 1,
      elem.r + elem.rs,
      elem.c + elem.cs
    )
  })
}

/**
 * 设置边框
 * @param luckyBorderInfo
 * @param worksheet
 */
var setBorder = function (luckyBorderInfo, worksheet) {
  if (!Array.isArray(luckyBorderInfo)) return

  //合并边框信息
  var mergeCellBorder = function (border1, border2) {
    if (undefined === border1 || Object.keys(border1).length === 0) return border2;
    return Object.assign({}, border1, border2)
  }

  // console.log('luckyBorderInfo', luckyBorderInfo)
  luckyBorderInfo.forEach(function (elem) {
    // 现在只兼容到borderType 为range的情况
    // console.log('ele', elem)
    if (elem.rangeType === 'range') {
      let border = borderConvert(elem.borderType, elem.style, elem.color)
      let rang = elem.range[0]
      let row = rang.row
      let column = rang.column

      let rowBegin = row[0]
      let rowEnd = row[1]
      let colBegin = column[0]
      let colEnd = column[1]
      //处理外边框的情况 没有直接对应的外边框 需要转换成上下左右
      if (border.all) {//全部边框
        let b = border.all
        for (let i = row[0] + 1; i <= row[1] + 1; i++) {
          for (let y = column[0] + 1; y <= column[1] + 1; y++) {
            let border = {}
            border['top'] = b;
            border['bottom'] = b;
            border['left'] = b;
            border['right'] = b;
            worksheet.getCell(i, y).border = border
            // console.log(i, y, worksheet.getCell(i, y).border)
          }
        }
      } else if (border.top) {//上边框
        let b = border.top
        let i = row[0] + 1;
        for (let y = column[0] + 1; y <= column[1] + 1; y++) {
          let border = {}
          border['top'] = b;
          worksheet.getCell(i, y).border = border
          // console.log(i, y, worksheet.getCell(i, y).border)
        }
      } else if (border.right) {//右边框
        let b = border.right
        for (let i = row[0] + 1; i <= row[1] + 1; i++) {
          let y = column[1] + 1;
          let border = {}
          border['right'] = b;
          worksheet.getCell(i, y).border = border
          // console.log(i, y, worksheet.getCell(i, y).border)
        }
      } else if (border.bottom) {//下边框
        let b = border.bottom
        let i = row[1] + 1;
        for (let y = column[0] + 1; y <= column[1] + 1; y++) {
          let border = {}

          border['bottom'] = b;
          worksheet.getCell(i, y).border = border
          // console.log(i, y, worksheet.getCell(i, y).border)
        }
      } else if (border.left) {//左边框
        let b = border.left
        for (let i = row[0] + 1; i <= row[1] + 1; i++) {
          let y = column[0] + 1;
          let border = {}
          border['left'] = b;
          worksheet.getCell(i, y).border = border
          // console.log(i, y, worksheet.getCell(i, y).border)
        }
      } else if (border.outside) {//外边框
        let b = border.outside
        for (let i = row[0] + 1; i <= row[1] + 1; i++) {
          for (let y = column[0] + 1; y <= column[1] + 1; y++) {
            let border = {}
            if (i === rowBegin + 1) {
              border['top'] = b
            }
            if (i === rowEnd + 1) {
              border['bottom'] = b
            }
            if (y === colBegin + 1) {
              border['left'] = b
            }
            if (y === colEnd + 1) {
              border['right'] = b
            }
            let border1 = worksheet.getCell(i, y).border
            worksheet.getCell(i, y).border = mergeCellBorder(border1, border)
            // console.log(i, y, worksheet.getCell(i, y).border)
          }
        }
      } else if (border.inside) {//内边框
        let b = border.inside
        for (let i = row[0] + 1; i <= row[1] + 1; i++) {
          for (let y = column[0] + 1; y <= column[1] + 1; y++) {
            let border = {}
            if (i !== rowBegin + 1) {
              border['top'] = b
            }
            if (i !== rowEnd + 1) {
              border['bottom'] = b
            }
            if (y !== colBegin + 1) {
              border['left'] = b
            }
            if (y !== colEnd + 1) {
              border['right'] = b
            }
            let border1 = worksheet.getCell(i, y).border
            worksheet.getCell(i, y).border = mergeCellBorder(border1, border)
            // console.log(i, y, worksheet.getCell(i, y).border)
          }
        }
      } else if (border.horizontal) {//内侧水平边框
        let b = border.horizontal
        for (let i = row[0] + 1; i <= row[1] + 1; i++) {
          for (let y = column[0] + 1; y <= column[1] + 1; y++) {
            let border = {}
            if (i === rowBegin + 1) {
              border['bottom'] = b
            } else if (i === rowEnd + 1) {
              border['top'] = b
            } else {
              border['top'] = b
              border['bottom'] = b
            }
            let border1 = worksheet.getCell(i, y).border
            worksheet.getCell(i, y).border = mergeCellBorder(border1, border)
            // console.log(i, y, worksheet.getCell(i, y).border)
          }
        }
      } else if (border.vertical) {//内侧垂直边框
        let b = border.vertical
        for (let i = row[0] + 1; i <= row[1] + 1; i++) {
          for (let y = column[0] + 1; y <= column[1] + 1; y++) {
            let border = {}
            if (y === colBegin + 1) {
              border['right'] = b
            } else if (y === colEnd + 1) {
              border['left'] = b
            } else {
              border['left'] = b
              border['right'] = b
            }
            let border1 = worksheet.getCell(i, y).border
            worksheet.getCell(i, y).border = mergeCellBorder(border1, border)
            // console.log(i, y, worksheet.getCell(i, y).border)
          }
        }
      } else if (border.none) {//当luckysheet边框为border-none的时候表示没有边框 则将对应的单元格border清空
        for (let i = row[0] + 1; i <= row[1] + 1; i++) {
          for (let y = column[0] + 1; y <= column[1] + 1; y++) {
            worksheet.getCell(i, y).border = {}
            // console.log(i, y, worksheet.getCell(i, y).border)
          }
        }
      }
    }
    if (elem.rangeType === 'cell') {
      // col_index: 2
      // row_index: 1
      // b: {
      //   color: '#d0d4e3'
      //   style: 1
      // }
      const {col_index, row_index} = elem.value
      const borderData = Object.assign({}, elem.value)
      delete borderData.col_index
      delete borderData.row_index
      let border = addborderToCell(borderData, row_index, col_index)
      let border1 = worksheet.getCell(row_index + 1, col_index + 1).border;
      worksheet.getCell(row_index + 1, col_index + 1).border = mergeCellBorder(border1, border)
      // console.log(row_index + 1, col_index + 1, worksheet.getCell(row_index + 1, col_index + 1).border)
    }
  })
}


/**
 * 设置带样式的值
 * @param cellArr
 * @param worksheet
 */
var setStyleAndValue = function (cellArr, worksheet) {
  if (!Array.isArray(cellArr)) return
  cellArr.forEach(function (row, rowid) {
    row.every(function (cell, columnid) {
      if (!cell) return true
      let fill = fillConvert(cell.bg)
      let font = fontConvert(
        cell.ff,
        cell.fc,
        cell.bl,
        cell.it,
        cell.fs,
        cell.cl,
        cell.un
      )
      let alignment = alignmentConvert(cell.vt, cell.ht, cell.tb, cell.tr)
      let value = ''
      cell.f = null
      //公式
      if (cell.f) {
        value = {formula: cell.f, result: cell.v}
      } else if (!cell.v && cell.ct && cell.ct.s) {
        // xls转为xlsx之后，内部存在不同的格式，都会进到富文本里，即值不存在与cell.v，而是存在于cell.ct.s之后
        let richText = [];
        let cts = cell.ct.s
        for (let i = 0; i < cts.length; i++) {
          let rt = {
            text: cts[i].v,
            font: fontConvert(cts[i].ff, cts[i].fc, cts[i].bl, cts[i].it, cts[i].fs, cts[i].cl, cts[i].un)
          }
          richText.push(rt)
        }
        value = {
          richText: richText
        };

      } else {
        //设置值为数字格式
        if (cell.v !== undefined && cell.v !== '') {
          var v = +cell.v;
          if (isNaN(v)) v = cell.v
          value = v
        }
      }
      //  style 填入到_value中可以实现填充色
      let letter = createCellPos(columnid)
      let target = worksheet.getCell(letter + (rowid + 1))
      for (const key in fill) {
        target.fill = fill
        break
      }
      //添加批注
      if (cell.ps) {
        let ps = cell.ps
        target.note = ps.value
      }

      target.font = font
      target.alignment = alignment
      target.value = value

      try {
        //设置单元格格式
        target.numFmt = cell.ct.fa;
      } catch (e) {
        console.warn(e)
      }
      return true
    })
  })
}

/**
 * 设置图片
 * @param images
 * @param worksheet
 * @param workbook
 */
var setImages = function (images, worksheet, workbook) {
  if (typeof images != "object") return;
  for (let key in images) {
    // console.log(images[key]);
    // "..."
    // 通过 base64  将图像添加到工作簿
    const myBase64Image = images[key].src;
    //位置
    const tl = {col: images[key].default.left / 72, row: images[key].default.top / 19}
    // 大小
    const ext = {width: images[key].default.width, height: images[key].default.height}
    const imageId = workbook.addImage({
      base64: myBase64Image,
      //extension: 'png',
    });
    worksheet.addImage(imageId, {
      tl: tl,
      ext: ext
    });
  }
}

/**
 * 冻结行列
 * @param frozen
 * @param worksheet
 */
var setFrozen = function (frozen = {}, worksheet) {
  switch (frozen.type) {
    // 冻结首行
    case 'row': {
      worksheet.views = [
        {state: 'frozen', xSplit: 0, ySplit: 1}
      ];
      break
    }
    // 冻结首列
    case 'column': {
      worksheet.views = [
        {state: 'frozen', xSplit: 1, ySplit: 0}
      ];
      break
    }
    // 冻结行列
    case 'both': {
      worksheet.views = [
        {state: 'frozen', xSplit: 1, ySplit: 1}
      ];
      break
    }
    // 冻结行到选区
    case 'rangeRow': {
      let row = frozen.range.row_focus + 1
      worksheet.views = [
        {state: 'frozen', xSplit: 0, ySplit: row}
      ];
      break
    }
    // 冻结列到选区
    case 'rangeColumn': {
      let column = frozen.range.column_focus + 1
      worksheet.views = [
        {state: 'frozen', xSplit: column, ySplit: 0}
      ];
      break
    }
    // 冻结行列到选区
    case 'rangeBoth': {
      let row = frozen.range.row_focus + 1
      let column = frozen.range.column_focus + 1
      worksheet.views = [
        {state: 'frozen', xSplit: column, ySplit: row}
      ];
    }

  }

}

/**
 * 行隐藏
 * @param rowhidden
 * @param worksheet
 */
var setRowHidden = function (rowhidden = {}, worksheet) {
  for (const key in rowhidden) {
    //如果当前行没有内容则隐藏不生效
    const row = worksheet.getRow(parseInt(key) + 1)
    row.hidden = true;
  }
}

/**
 * 列隐藏
 * @param colhidden
 * @param worksheet
 */
var setColHidden = function (colhidden = {}, worksheet) {
  for (const key in colhidden) {
    const column = worksheet.getColumn(parseInt(key) + 1)
    column.hidden = true;
  }
}

/**
 * 自动筛选器
 * @param filter
 * @param worksheet
 */
var setFilter = function (filter = {}, worksheet) {
  if (Object.keys(filter).length === 0) return
  const from = {
    row: filter.row[0] + 1,
    column: filter.column[0] + 1
  }

  const to = {
    row: filter.row[1] + 1,
    column: filter.column[1] + 1
  }

  worksheet.autoFilter = {
    from: from,
    to: to
  }

}
var setAnnotations = function () {

}
var fillConvert = function (bg) {
  if (!bg) {
    return {}
  }
  // const bgc = bg.replace('#', '')
  let fill = {
    type: 'pattern',
    pattern: 'solid',
    fgColor: {argb: bg.startsWith("#") ? bg.replace('#', '') : colorRGBtoHex(bg).replace("#", "")},
  }
  return fill;
}

var fontConvert = function (
  ff = 0,
  fc = '#000000',
  bl = 0,
  it = 0,
  fs = 10,
  cl = 0,
  ul = 0
) {
  // luckysheet：ff(样式), fc(颜色), bl(粗体), it(斜体), fs(大小), cl(删除线), ul(下划线)
  const luckyToExcel = {
    0: '微软雅黑',
    1: '宋体（Song）',
    2: '黑体（ST Heiti）',
    3: '楷体（ST Kaiti）',
    4: '仿宋（ST FangSong）',
    5: '新宋体（ST Song）',
    6: '华文新魏',
    7: '华文行楷',
    8: '华文隶书',
    9: 'Arial',
    10: 'Times New Roman ',
    11: 'Tahoma ',
    12: 'Verdana',
    num2bl: function (num) {
      return num !== 0
    }
  }
  // 出现Bug，导入的时候ff为luckyToExcel的val

  let font = {
    name: typeof ff === 'number' ? luckyToExcel[ff] : ff,
    family: 1,
    size: fs,
    color: {argb: fc.startsWith("#") ? fc.replace('#', '') : colorRGBtoHex(fc).replace("#", "")},
    bold: luckyToExcel.num2bl(bl),
    italic: luckyToExcel.num2bl(it),
    underline: luckyToExcel.num2bl(ul),
    strike: luckyToExcel.num2bl(cl)
  }

  return font
}

var alignmentConvert = function (
  vt = 'default',
  ht = 'default',
  tb = 'default',
  tr = 'default'
) {
  // luckysheet:vt(垂直), ht(水平), tb(换行), tr(旋转)
  const luckyToExcel = {
    vertical: {
      0: 'middle',
      1: 'top',
      2: 'bottom',
      default: 'middle'
    },
    horizontal: {
      0: 'center',
      1: 'left',
      2: 'right',
      default: 'center'
    },
    wrapText: {
      0: false,
      1: false,
      2: true,
      default: false
    },
    textRotation: {
      0: 0,
      1: 45,
      2: -45,
      3: 'vertical',
      4: 90,
      5: -90,
      default: 0
    }
  }

  let alignment = {
    vertical: luckyToExcel.vertical[vt],
    horizontal: luckyToExcel.horizontal[ht],
    wrapText: luckyToExcel.wrapText[tb],
    textRotation: luckyToExcel.textRotation[tr]
  }
  return alignment
}

var borderConvert = function (borderType, style = 1, color = '#000') {
  // 对应luckysheet的config中borderinfo的的参数
  if (!borderType) {
    return {}
  }
  const luckyToExcel = {
    type: {
      'border-all': 'all',
      'border-top': 'top',
      'border-right': 'right',
      'border-bottom': 'bottom',
      'border-left': 'left',
      'border-outside': 'outside',
      'border-inside': 'inside',
      'border-horizontal': 'horizontal',
      'border-vertical': 'vertical',
      'border-none': 'none',
    },
    style: {
      0: 'none',
      1: 'thin',
      2: 'hair',
      3: 'dotted',
      4: 'dashDot', // 'Dashed',
      5: 'dashDot',
      6: 'dashDotDot',
      7: 'double',
      8: 'medium',
      9: 'mediumDashed',
      10: 'mediumDashDot',
      11: 'mediumDashDotDot',
      12: 'slantDashDot',
      13: 'thick'
    }
  }
  let border = {}
  border[luckyToExcel.type[borderType]] = {
    style: luckyToExcel.style[style],
    color: {argb: color.replace('#', '')}
  }
  return border
}

function addborderToCell(borders, row_index, col_index) {
  let border = {}
  const luckyExcel = {
    type: {
      l: 'left',
      r: 'right',
      b: 'bottom',
      t: 'top'
    },
    style: {
      0: 'none',
      1: 'thin',
      2: 'hair',
      3: 'dotted',
      4: 'dashDot', // 'Dashed',
      5: 'dashDot',
      6: 'dashDotDot',
      7: 'double',
      8: 'medium',
      9: 'mediumDashed',
      10: 'mediumDashDot',
      11: 'mediumDashDotDot',
      12: 'slantDashDot',
      13: 'thick'
    }
  }
  // console.log('borders', borders)
  for (const bor in borders) {
    // console.log(bor)
    if (borders[bor].color.indexOf('rgb') === -1) {
      border[luckyExcel.type[bor]] = {
        style: luckyExcel.style[borders[bor].style],
        color: {argb: borders[bor].color.replace('#', '')}
      }
    } else {
      border[luckyExcel.type[bor]] = {
        style: luckyExcel.style[borders[bor].style],
        color: {argb: borders[bor].color}
      }
    }
  }

  return border
}

function createCellPos(n) {
  let ordA = 'A'.charCodeAt(0)

  let ordZ = 'Z'.charCodeAt(0)
  let len = ordZ - ordA + 1
  let s = ''
  while (n >= 0) {
    s = String.fromCharCode((n % len) + ordA) + s

    n = Math.floor(n / len) - 1
  }
  return s
}

//rgb(255,255,255)转16进制 #ffffff
function colorRGBtoHex(color) {
  color = color.replace("rgb", "").replace("(", "").replace(")", "")
  var rgb = color.split(',');
  var r = parseInt(rgb[0]);
  var g = parseInt(rgb[1]);
  var b = parseInt(rgb[2]);
  return "#" + ((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1);
}


export {
  exportExcelFront
}
